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Population distribution and seasonal alternation of two species of monogeneans on the gills of Hypophthalmichthys molitrix and Ctenopharyngodon idellus
Yao Wei-jian; Nie Pin (pinnie@ihb.ac.cn); State Key Lab Freshwater Ecol and Biotechnol, Wuhan, 430027, China
2004
Source PublicationActa Hydrobiologica Sinica
ISSN1000-3207
Volume28Issue:6Pages:664-667
AbstractThe population distribution and seasonal alternation of Dactylogyrus hypophthalmichthys on gills of silver carp Hypophthalmichthys molitrix, and D. lamellatus on grass carp Ctemopharyngodon idellus were studied. Two species of fish were collected in a fish pond in the Institute of Hydrobiology, Chinese Academy of Sciences in Wuhan, China from December 1995 to November 1996. The population dynamics of abundance and prevalence were similar for the two species of monogeneans. The prevalence was higher than 70% for D. hypophthalmichthys and higher than 60% for D. lamellatus, and no significant difference ( G = ?, P 0.05) was found between months for the two species of monogeneans. The abundance of D. hypophthalmichthys increased gradually from February to March, and reached the highest level in April, then declined gradually and remained at a low level in autumn and winter; while D. lamellatus increased from November to March, and reached the highest value in April, then decreased rapidly and maintained a low level in summer and autumn. Statistical analysis indicated that changes in abundance of D. hypophthalmichthys and D. lamellatus were both significantly seasonal (F = ?, P 0.05). The pattern of distribution of D. hypophthalmichthys was over-dispersed, as the variance to mean ratio was more than 1 and the degree of aggregation was high in spring and autumn. The pattern of D. lamellatus was also over-dispersed, with its the degree of aggregation being high in spring and winter.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18049
Collection期刊论文
Corresponding AuthorYao Wei-jian; State Key Lab Freshwater Ecol and Biotechnol, Wuhan, 430027, China
Recommended Citation
GB/T 7714
Yao Wei-jian,Nie Pin ,State Key Lab Freshwater Ecol and Biotechnol, Wuhan, 430027, China. Population distribution and seasonal alternation of two species of monogeneans on the gills of Hypophthalmichthys molitrix and Ctenopharyngodon idellus[J]. Acta Hydrobiologica Sinica,2004,28(6):664-667.
APA Yao Wei-jian,Nie Pin ,&State Key Lab Freshwater Ecol and Biotechnol, Wuhan, 430027, China.(2004).Population distribution and seasonal alternation of two species of monogeneans on the gills of Hypophthalmichthys molitrix and Ctenopharyngodon idellus.Acta Hydrobiologica Sinica,28(6),664-667.
MLA Yao Wei-jian,et al."Population distribution and seasonal alternation of two species of monogeneans on the gills of Hypophthalmichthys molitrix and Ctenopharyngodon idellus".Acta Hydrobiologica Sinica 28.6(2004):664-667.
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